{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DFE201210S-R47M=P2","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"DFE201210S-R47MP2","canonicalUrl":"https://icboms.com/murata-electronics/DFE201210S-R47MP2","factsUrl":"https://icboms.com/api/mcp/products/DFE201210S-R47M%3DP2","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics DFE201210S series, Drum Core Wirewound, Shielded, 470 nH, ±20%, 3.4 A, 32mOhm, 0805 (2012 Metric), Surface Mount.","salesMarkdown":"## 470 nH, 3.4 A — the power rail inductor that is no longer in production The Murata DFE201210S-R47M=P2 is a 470 nH shielded drum-core wirewound inductor in the 0805 (2012 Metric) footprint, rated for 3.4 A continuous current with a saturation current of 4.8 A. The 32 mOhm max DCR keeps conduction losses manageable for a 3 A rail — at full rated current the I²R loss is roughly 370 mW, which the metal-core construction and 125°C rating can handle without derating in most ambient conditions. ## What the ratings mean for the DC-DC converter The 3.4 A current rating is the thermal limit at 25°C ambient — in a 85°C environment the part derates per the standard inductor curve, but the 125°C operating ceiling gives headroom for a 12 V-to-3.3 V buck converter delivering 2 A continuous. The 4.8 A saturation current means the inductance holds within 10% of nominal up to that point; beyond it the metal core saturates abruptly, so the peak inductor current in the converter must stay under 4.8 A even during load transients. Shielded construction contains the magnetic field within the 0805 package — critical when the inductor sits next to a sensitive ADC or RF front-end on the same board. The metal core delivers higher saturation flux density than ferrite for the same volume, which is why the 0805 body can carry 4.8 A saturation without a larger footprint. ## Obsolete — sourcing through independent channels Murata has marked the DFE201210S-R47M=P2 as Obsolete. For a BOM line that requires this exact inductance, footprint, and current rating, the procurement path is spot-market sourcing — no factory lead time applies.","metaTitle":"Murata DFE201210S-R47M=P2 470nH Shielded Inductor, 3.4A","metaDescription":"Obsolete Murata DFE201210S-R47M=P2 drum core wirewound inductor, 470nH ±20%, 3.4A, 32mOhm DCR, 0805.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"Drum Core, Wirewound","Series":"DFE201210S","Package":"Tape & Reel (TR)","Ratings":"-","Features":"-","Q @ Freq":"-","Shielding":"Shielded","Tolerance":"±20%","Inductance":"470 nH","Mounting Type":"Surface Mount","Package / Case":"0805 (2012 Metric)","Product Status":"Obsolete","Material - Core":"Metal","lifecycle_stage":"unknown","Size / Dimension":"0.079\\\" L x 0.047\\\" W (2.00mm x 1.20mm)","Base Product Number":"DFE201210S","DC Resistance (DCR)":"32mOhm Max","Current Rating (Amps)":"3.4 A","Height - Seated (Max)":"0.039\\\" (1.00mm)","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"0805","Frequency - Self Resonant":"-","Current - Saturation (Isat)":"4.8A","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/92927a39820a2cd2c2658d2564ecdcd3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/DFE201210S-R47M%3DP2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to DFE201210S-R47M=P2?","answer":"A functional replacement would need to match the 0805 footprint, 470 nH ±20%, 3.4 A minimum current rating, and shielded metal-core construction — but no single Murata order code is documented as a drop-in substitute. A parametric search against the DFE201210S series may yield active siblings, but each requires board-level verification of DCR and saturation current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/DFE201210S-R47MP2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/DFE201210S-R47MP2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}